[Williamhawk]

hello,
I’m trying to better understand the operation of and tuning of the carbs on my older 454s. The carbs are SAE J1223, model 9015-1.
Research tells me they are marine carbs 750 cfm designed for electric choke and (vacuum secondaries?).

Engines are running ok but starboard motor seems really rich and my fuel consumption on the starboard side seems to be 2x the port side. I just purchased this older project boat about 6 months ago and have been working out things as we go. I have not attempted to put the boat on plane yet, but have done a few lengthy harbor cruises at about 1400 rpms. The boat is a 1976 Jeffries flybridge (fiberglass) it is 32′ long and weighs 18,000 lbs. I know the weight from scale on crane during haulout for bottom paint.
Thanks!

 

 

 

For More References:
http://www.marineengine.com/boat-forum/showthread.php?442551-454s-with-Holley-carbs-questions-about-carb-operation

 

 

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